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100ADM Current Injection System

Features

• Clear and simple user interface

• 0-100A output current

• Current limit mode for fine current control

• True RMS metering with single cycle capture memory ammeter

• Multi-function auto-ranging timing system

• Auxiliary DC and AC output

• Large back-lit liquid crystal display

• Thermal and over-current protection

• Compact and portable

• Automatic mains voltage selection

The 100ADM mk4 provides commissioning and maintenance

engineers with a flexible system for testing protective systems. It

has an easy to understand panel layout and a simple user interface.

The status of every function can be seen at a glance, and there are

no complex menus to navigate.

The 100ADM mk4 keeps the familiar user interface of previous

models but adds a new metering system that accurately measures

the RMS of a single cycle. It also features a new current limit mode

to provide very fine control of low currents, even into low impedance

loads. Current limit mode also assists in testing self-powered

overcurrent protection as fitted to many 11kV ring main units.

The unit has a range of outputs allowing injection of currents as low

as a few mA and as high as 100A. Voltages up to 240V are

available allowing high impedance current relays and voltage relays

to be tested. Four true RMS metering ranges are provided, and the

full scale of the meter (and trip level) can be set independently of

output tap. Industry standard safety connectors are used on all

inputs and outputs for convenience, reliability and safety.

A very flexible two channel timing system is provided, allowing trip

times, reset times and reclose times to be quickly measured to a

high degree of accuracy. The timer auto-ranges to measure from

1ms to 99999.9s.

The back-lit display on the 100ADM mk4 is bright and clear

with a wide viewing angle. The results of a test can be seen

here as they appear on the display.

The outputs of the 100ADM mk4 are well protected. The main

output is protected by overcurrent, duty cycle and thermal trips. The

auxiliary DC supply is protected by a current limit, and the auxiliary

AC supply is fuse protected.

mk4

IEEE no. Type

27/59 Under/over voltage

37 Undercurrent

50/76 Instantaneous overcurrent

Ground fault relay

51 IDMT overcurrent relay

59G Neutral voltage displacement

67 Directional overcurrent (basic tests)

IEEE no. Type

79 Auto recloser

86 Lockout relay

94 Tripping relay

90V Voltage regulating relay

Miniature circuit breakers Circuit breakers for

equipment

Thermal relays

100ADM mk4 Applications

A 24-220VDC switch-mode stabilised DC supply with current limiting

is provided to power the relay under test. An isolated, separately

switched 110VAC auxiliary supply is also provided.

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Main Output

The main output on the unit has four taps, allowing the selection of

output voltages up to 240V and output currents up to 100A.

*Off time of 15 minutes. On times based on an ambient temperature of 25°C.

I Limit Mode

The main output has a current limit mode that gives very fine control

of output currents up to 10A. It also allows fine current control into

very low impedance loads such as digital relays.

Auxiliary AC and DC Outputs

A switched, isolated auxiliary DC supply with current limit protection

is available to power the relay under test, and a 110VAC auxiliary

output is available for tests.

DC stabilised output 24V, 48V, 60V 1.0A

110V, 220V 0.23A

Fixed AC output 110VAC 300mA

Metering

The output is metered by a digital true RMS system with a single

cycle capture memory ammeter—whenever the timer stops and the

output is switched off, the reading is held on the display. A current

trip is set to 110% of full scale of the selected metering range.

Supply Requirements

115/230V±10% auto-selecting 50/60Hz 1ph 1200VA max

Timing System

Range 0-999.999s/9999.99s/99999.9s autoranging

Resolution 1/10/100ms

Accuracy 0.01%rdg+2d (+4d current operated mode)

Contact o/c 24V

Contact s/c 20mA

Vdc 24—240V

Each contact circuit will auto-select for normally open or normally

closed contacts. A DC voltage of 24—240VDC may also be used to

trigger either timer channel. Contact state is shown by an LED. The

output automatically switches off at the end of the test to safeguard

the relay under test.

Pulse mode is used for setting the current level in devices sensitive

to heating. Current is injected for 200ms.

RS232 and T&R Link

An RS232 port is provided to allow connection to a PC or a printer.

The T&R Link output allows a T&R DVS3 mk2 voltage source to

phase lock to the 100ADM mk4 current.

Protection and Safety

The unit is designed to comply with BSEN61010 and is CE marked.

An earth terminal is provided for connection to a local earth for

testing in sub-station environments.

Dimensions Weight

560 x 456 x 265mm 23.9kg

Temperature Range

Storage -20°C to 60°C Operating 0°C to 45°C

Lead Set specifications

The 100ADM mk4 is supplied with a lead set consisting of:

2 x 5m 25mm2 100A leads terminated in M10 ring crimps

2 x 5m, 2 x 0.5m 2.5mm2 25A leads terminated in 4mm plugs

1 x 5m 2 core 0.75mm2 lead terminated in 4mm plugs

Accessories

Operating manual, output lead set, mains lead and spare fuses.

Optional Accessories

100ADM-F Filter unit, RB10 resistor box, Printer, pushbutton lead

for runback timing on disc induction relays.

100ADM mk4 Specification

Range Current Output @230V

Cont 5 min* 1 min* O/C Load V

10V 33A 67A 100A 10.5V 8.7V@100A

35V 10A 20A 30A 36V 32V@30A

100V 3A 6A 10A 108V 99V@10A

240V 1A 2A 3A 276V 259V@3A

240Vdc 1A 2A 3A

Range

Current (A) Output V @230V

Short

circuit Cont. 5 min 2 min O/C Load V

10V 10A 3A 6A 10A 8.6V 5V@5A

35V 3A 1A 2A 3A 29V 13V@2A

100V 1A 0.3A 0.6A 1A 88V 40V@0.6A

240V 0.3A 0.1A 0.2A 0.3A 224V 130V@0.2A

Range Resolution Trip

current Accuracy

Acquisition

time

2.000A 0.001A 2.2A ±0.5%rdg±5d 20ms

10.00A 0.01A 11A ±0.5%rdg±5d 20ms

20.00A 0.01A 22A ±0.5%rdg±5d 20ms

100.0A 0.1A 110A ±0.5%rdg±5d 20ms

Mode Timer Start Timer Stop

Internal start Press ‘ON’

1 contact C1 1st change

2 contacts C1 change C2 change

Current operated Current > 10% of

metering range

Current < 10% of

metering range

Pulse Press ‘ON’ 200ms